diescher



WITNESSES z +l'-'1 E v Q M'MQM Sept. 4, 1928. 1,683,128

s. E. DIESCHER GAS BURNER Original Filed Oct. 24, 1923 2 Sheets-Sheet .1

Sept. 4, 1928. 1,683,128 S. E. DIESCHER GAS BURNER oriinal Filed Oct.1923 2 Sheets-Sheet 2 FIELZ.

Patented Sept. 4, 1928.

' I 'nmrsn STATES" 1,683,128 PATENT OFFICE.

sari-Uni. s. msson'na, or wILKnvsBnne, melamine.

ens BURNER;-

Application filed October 24, 1923, Serial No. 670,456. Renewed July 9,1925.

The invention described herein relates to certain improvements in thetype of construction of burner for gas having a specific gravity lessthan that of air in which the sheet or thin stream of gas is introducedinto a. mixing chamber of the burner under a sheet or thin stream of airflowing through such chamber in order that the mixing of gas and airwill be effected by the movea merit of the gas up into the stream ofair.

The invention has for its object the provision of means whereby thesupply of gas and air can be simultaneously effected, the supply of airchanging proportionately to 5 any change in the rate of gas supply.

The invention is hereinafter more fully described and claimed.

In the accompanying drawings forming a part of this specification, Fig.1 is a sectional elevation of a burner embodying the improvement claimedherein, and Fig. 2 is a sectional plan View on a plane indicated by theline IIII, Fig. 1.

In. the practice of the invention the burner consists of a shelllsubstantially rectangular in cross section and having a passage 2 eX-tending longitudinally of the burner. said passage being graduallyreduced in height from the front to the discharge end by the downwardinclination of the top of the burner. At, or adjacent to, its front end,

the burner is provided with a gas chamber 3 preferably formed by a walll transverse of the shell and extending a suitable distance R5 towardsthe discharge end of the burner and communicating with the passage 2through a narrow slot 5 preferably extending the entire width of theshell. A thimble 6 adapted to be connected to the gas supply pipe 7projects into the gas chamber. The thimble is provided with ports oropenings 8 for the flow of gas into the chamber, the flow of gas throughthe ports being controlled by a valve 9. In order that the flow of gasinto the chamber may be proportional to changes in the dimensions of theports due to the shifting of the valve,

the ports are made rectangular and extend lengthwise of the thimble andthe valve is made in the form of a piston slidable lengthwise of thethimble. The movement of the valve may be effected by any suitable meanspreferably by the rotation of a rod 10 extending vertically through theshell and provided at its lower end with a threaded stem 11 passingthrough a threaded opening in the end of the valve. In order to preventleakage of gas into the air passage, the valve operating. rod isenclosed in a stuffing box 12 where it passes through the wall t. Thevalve is prevented from rotation when the rod is turned by means of apin a projecting through the thimble into vertical slots in I the valve.

The flow of air through the passage 2 is controlled by a damper 13having one edge secured to a shaft 14 having its end mounted in bearingsin the side walls of the shell. On this shaft is secured aperipherically toothed segment 15 adapted to be engaged by a worm 16 onthe rod 10. As the shell is rectangular in cross-section and the damperis formed. by a rectangular'plate extending from side to side of theshell, the quantity of air flowing through the passage will varyproportionally to the change in position of the damper. In adjust-ingthe burner for use the valve 9 is adjusted to supply the proper amountof gas for normal use' The damper 13 is then adjusted to supply theproper amount of air for complete combustion. The connection of thevalve and damper to the operating rod are so constructed that therotation of the rod to shift the valve will so shift the damper as tosupply the proper amount of air for the com bustion of increased ordecreased quantity of gas.

Gas usually carries With it particles of oil or tar which are liable tolodge in and clog the slot 5. In order to facilitate the removal of theoil or tar, a wiper 17 is employed. This wiper consists of a narrow thinstrip of metal secured at one end to a shaft 18 projecting up into a gaschamber. This shaft and wiper are so constructed and arranged that thewiper will extend through the slot 5. In order to preventan accumulationof the oil and tar, a slot 19 is.

formedthrough the bottom wall of the slot 5 and a suitable receptacle 20is arranged under the slot 19 for the reception of the oil and tar. Thisreceptacle is provided at one or both ends with an opening for removalof the oil and tar, such opening be-,

ing normally closed by a suitable plug.

I claim herein as my invention:

A gas burner having in combination a shell provided with an air passagesubstantially rectangular in cross section and with a gas chamber socommunicating with the air passage as to deliver gas to the undersideofla. stream of air flowingthrough the out. changing the shape of thestre arm andj' passa e, gag supplying meanshavingrecmeans forsimultaneously shifting thevalve tangu a r ports communicating with thegas and damper. I chamber, a valve adapted to change the di{ V Intestimony whereof, I havohereunto set 5 mansions of said ports withoutchanging my hand. 3 g their shape, a damper adapted to chango the r r Vrate of flow of air through the passage with- SAMUEL E. DIESCHER.

